STM32WB10CCU5 datasheet(63/110 Pages) STMICROELECTRONICS

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DS13259 Rev 2

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STM32WB10CC

Electrical characteristics

102

6.3.7

Supply current characteristics

The current consumption is a function of several parameters and factors such as the

operating voltage, ambient temperature, I/O pin loading, device software configuration,

operating frequencies, I/O pin switching rate, program location in memory and executed

binary code.

The current consumption is measured as described in Figure 11: Current consumption

measurement scheme.

Typical and maximum current consumption

The MCU is put under the following conditions:



All I/O pins are in analog input mode



All peripherals are disabled except when explicitly mentioned



The Flash memory access time is adjusted with the minimum wait states number,

depending on the fHCLK frequency (refer to the table “Number of wait states according

to CPU clock (HCLK) frequency” available in the RM0478 reference manual).



When the peripherals are enabled fPCLK = fHCLK



For Flash memory and shared peripherals fPCLK = fHCLK = fHCLKS

The parameters given in Table 28 to Table 38 are derived from tests performed under

ambient temperature and supply voltage conditions summarized in Table 20: General

operating conditions.

Table 28. Current consumption in Run and Low-power run modes, code with data processing

running from Flash memory, ART enable (Cache ON Prefetch OFF), VDD = 3.3 V

Symbol Parameter

Conditions

fHCLK

Typ

Max(1)

Unit

25 °C

55 °C

85 °C

25 °C 85 °C

IDD(Run)

Supply

current in

Run mode

fHCLK = fHSI16 up to 16 MHz

included, fHCLK = fHSE = 32 MHz

fHSI16 + PLL ON above 32 MHz

All peripherals disabled

64 MHz

6.35

6.40

6.45

7.25

7.37

32 MHz

3.25

3.30

3.35

3.29

3.53

16 MHz

1.75

1.80

2.06

2.18

IDD

(LPRun)

Supply

current in

Low-power

run mode

fHCLK = fMSI

All peripherals disabled

2 MHz

0.190

0.205

0.235

0.270 0.460

1 MHz

0.105

0.115

0.145

0.170 0.320

400 kHz 0.051 0.0605 0.0905 0.080 0.230

100 kHz 0.024

0.034 0.0645 0.040 0.190

1. Evaluated by characterization (mean ± 4 σ), not tested in production, unless otherwise specified.

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